<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="" />
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="手机号"
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
          />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px"
        class="login_btn"
        @click.native.prevent="handleLogin"
        >登录</el-button
      >

      <div class="tips">
        <span style="margin-right: 20px">用户名: 13337139833</span>
        <span> 密码: 123456</span>\
        <span @click="testFn">测试</span>
      </div>
    </el-form>
  </div>
</template>

<script>
// 目标: 完成登录功能
// 1. 登录按钮->绑定点击事件
// 2. 防止用户上来就点击登录跳转输入框失焦的验证, 在事件方法中(兜底js校验)
// 3. 把收集到的用户名和密码传递给后台接口(封装接口方法, 引入过来调用)
// 4. 根据返回的值做提示/跳转/存入token
import { getUserProfileAPI } from '@/api'
export default {
  name: 'Login',
  data () {
    const validatePassword = (rule, value, callback) => {
      if (value.length !== 6) {
        callback(new Error('请输入6位的密码!!'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      loginRules: {
        mobile: [{ required: true, trigger: 'blur', pattern: /^1[3-9]\d{9}$/, message: '请输入正确的格式的手机号' }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      loading: false, // 登录按钮的加载状态(true打开转圈)
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        // 在路由跳转回来, 会把未遂地址路径保存到redirect变量上, 但是要求你前面的页面退出登录时传递过来参数
        // 要用redirect
        // replace(`/login?redirect=${this.$route.fullPath}`)
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    // 切换密码框的效果
    showPwd () {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    // 登录点击事件
    handleLogin () {
      this.$refs.loginForm.validate(async valid => {
        if (valid) {
          try {
            this.loading = true
            // dispatch()在原地也是一个Promise对象
            const res = await this.$store.dispatch('user/loginActions', this.loginForm)
            this.$message.success(res.message)

            // 把token字符串保存在user模块下state中token变量上
            // this.$store.commit('user/SET_TOKEN', res.data)
            this.loading = false
            // this.$router.replace('/')
            // replace:  // 不产生历史记录
            // 目标: 先取下/login路径后的未遂地址参数
            const theUrl = this.$route.query.theurl
            this.$router.replace(theUrl || '/')
            // 效果: 登录页路由路径里有未遂地址去未遂地址, 否则去首页
          } catch (err) {
            this.$message.error(err)
            this.loading = false
          }
        } else {
          return false
        }
      })
    },
    // 测试->获取用户信息
    async testFn () {
      const res = await getUserProfileAPI()
      console.log(res)
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #68b0fe; // 将输入框颜色改成蓝色
$cursor: #68b0fe; // 将输入框光标改成蓝色

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.el-form-item__error {
  font-size: 14px;
}
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    // background: rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.7);
    border-radius: 5px;
    color: #454545;
  }

  .login_btn {
    background: #407ffe;
    height: 64px;
    line-height: 32px;
    font-size: 24px;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  // background-color: $bg;
  // scss配合webpack的一个路径标识
  // ~@ 代表src文件夹地址
  background-image: url('~@/assets/common/login.jpg'); // 设置背景图片
  background-position: center; // 将图片位置设置为充满整个屏幕
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
